package com.pashanhoo.netty.simple;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

/**
 * @author 胡庆安
 * @version V1.0
 * @Package com.pashanhoo.netty.simple
 * @date 2020/11/6 10:07
 * @Copyright © 2010-2020 爬山虎科技（扬州）股份有限公司
 */
public class NettyClientHandler extends ChannelInboundHandlerAdapter {

    /**
     * 通道就绪时触发的方法
     * @param ctx
     * @throws Exception
     */
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        System.out.println("client---"+ctx);
        ctx.writeAndFlush(Unpooled.copiedBuffer("hello server:hqa", CharsetUtil.UTF_8));
    }

    /**
     * 当通道有读取事件的时候触发
     * @param ctx
     * @param msg
     * @throws Exception
     */
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息是："+buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址是："+ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
